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Title: VISAR Analysis in the Frequency Domain

Abstract

VISAR measurements are typically analyzed in the time domain, where velocity is approximately proportional to fringe shift. Moving to the frequency domain clarifies the limitations of this approximation and suggests several improvements. For example, optical dispersion preserves high-frequency information, so a zero-dispersion (air delay) interferometer does not provide optimal time resolution. Combined VISAR measurements can also improve time resolution. With adequate bandwidth and reasonable noise levels, it is quite possible to achieve better resolution than the VISAR approximation allows.

Authors:
 [1];  [1]
  1. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Publication Date:
Research Org.:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1367088
Report Number(s):
SAND-2017-6427J
Journal ID: ISSN 2199-7446; PII: 121
Grant/Contract Number:  
AC04-94AL85000; NA0003525
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Journal of Dynamic Behavior of Materials
Additional Journal Information:
Journal Volume: 3; Journal Issue: 3; Journal ID: ISSN 2199-7446
Publisher:
Springer
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; VISAR; Velocimetry; Fourier transform; Frequency domain; Time resolution

Citation Formats

Dolan, D. H., and Specht, P.. VISAR Analysis in the Frequency Domain. United States: N. p., 2017. Web. doi:10.1007/s40870-017-0121-7.
Dolan, D. H., & Specht, P.. VISAR Analysis in the Frequency Domain. United States. doi:10.1007/s40870-017-0121-7.
Dolan, D. H., and Specht, P.. Thu . "VISAR Analysis in the Frequency Domain". United States. doi:10.1007/s40870-017-0121-7. https://www.osti.gov/servlets/purl/1367088.
@article{osti_1367088,
title = {VISAR Analysis in the Frequency Domain},
author = {Dolan, D. H. and Specht, P.},
abstractNote = {VISAR measurements are typically analyzed in the time domain, where velocity is approximately proportional to fringe shift. Moving to the frequency domain clarifies the limitations of this approximation and suggests several improvements. For example, optical dispersion preserves high-frequency information, so a zero-dispersion (air delay) interferometer does not provide optimal time resolution. Combined VISAR measurements can also improve time resolution. With adequate bandwidth and reasonable noise levels, it is quite possible to achieve better resolution than the VISAR approximation allows.},
doi = {10.1007/s40870-017-0121-7},
journal = {Journal of Dynamic Behavior of Materials},
number = 3,
volume = 3,
place = {United States},
year = {Thu May 18 00:00:00 EDT 2017},
month = {Thu May 18 00:00:00 EDT 2017}
}

Journal Article:
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